This is the first working version of the new shield mentioned yesterday:
It connects a RFM12B radio and a micro SD card to the SPI bus. They both work, i.e. the radio can send & receive packets and the 2Gb Kingston µSD card can successfully enter SPI mode. These two peripherals alone would be enough to set up a self-contained data logger, but this is just the start – less than half of the shield area has been used so far.